bootblock: Provide some common prototypes

The split of bootblock initialisation to cpu, northbridge and
southbridge is not specific to intel at all, create new header
<arch/bootblock.h> as AMD will want some of these too.

Change-Id: I702cc6bad4afee4f61acf58b9155608b28eb417e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37429
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/southbridge/intel/bd82x6x/bootblock.c

@@ -13,7 +13,7 @@
  * GNU General Public License for more details.
  */
 
-#include <cpu/intel/car/bootblock.h>
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
 #include "pch.h"
 

src/southbridge/intel/i82371eb/bootblock.c

@@ -15,10 +15,10 @@
  */
 
 #include <stdint.h>
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
 #include <device/pci_ids.h>
 #include <device/pci_type.h>
-#include <cpu/intel/car/bootblock.h>
 #include "i82371eb.h"
 
 #define PCI_ID(VENDOR_ID, DEVICE_ID) \

src/southbridge/intel/i82801dx/bootblock.c

@@ -11,7 +11,7 @@
  * GNU General Public License for more details.
  */
 
-#include <cpu/intel/car/bootblock.h>
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
 
 void bootblock_early_southbridge_init(void)

src/southbridge/intel/i82801gx/bootblock.c

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
-#include <cpu/intel/car/bootblock.h>
 #include "i82801gx.h"
 
 static void enable_spi_prefetch(void)

src/southbridge/intel/i82801ix/bootblock.c

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
-#include <cpu/intel/car/bootblock.h>
 #include "i82801ix.h"
 
 

src/southbridge/intel/i82801jx/bootblock.c

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
-#include <cpu/intel/car/bootblock.h>
 #include "i82801jx.h"
 
 static void enable_spi_prefetch(void)

src/southbridge/intel/ibexpeak/bootblock.c

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
-#include <cpu/intel/car/bootblock.h>
 #include "pch.h"
 #include "chip.h"
 

src/southbridge/intel/lynxpoint/bootblock.c

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/bootblock.h>
 #include <device/pci_ops.h>
-#include <cpu/intel/car/bootblock.h>
 #include "pch.h"
 
 /*